558
FNUS74 KMOB 212238
FWSMOB
SPOT FORECAST FOR DESOTO BB 7310...USFS
NATIONAL WEATHER SERVICE MOBILE AL
538 PM CDT TUE APR 21 2026
FORECAST IS BASED ON IGNITION TIME OF 1800 CDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...HIGH DISPERSION INDEX AROUND 86 EXPECTED THURSDAY OVER THE
BURN AREA...
DISCUSSION
FOR WEDNESDAY, THE MINIMUM RELATIVE HUMIDITY IS
NEAR 40%, 20 FT WIND GUSTS WILL BE UP TO NEAR 20 MPH, TRANSPORT
WINDS WILL BE MOSTLY SOUTH-SOUTHEASTERLY TO EASTERLY, AND
DISPERSION VALUES WILL BE GOOD. FOR THURSDAY, THE MINIMUM
RELATIVE HUMIDITY IS NEAR 40%, 20 FT WIND GUSTS WILL BE UP TO
NEAR 20 MPH, TRANSPORT WINDS WILL BE MOSTLY SOUTH-SOUTHEASTERLY
TO SOUTHEASTERLY, AND DISPERSION VALUES WILL BE GOOD.
FOG POTENTIAL AND OTHER REMARKS...FOG IS POSSIBLE WEDNESDAY
NIGHT, THURSDAY MORNING.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 57.
MAX HUMIDITY........80 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 5 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......300 FT AGL.
MIXING HEIGHT (M)...91-1646 METERS AGL.
TRANSPORT WINDS.....SOUTH 5 TO 14 MPH SHIFTING TO THE EAST 3 TO 5
MPH AFTER 3 AM.
TRANSPORT WINDS M/S.SOUTH AROUND 6 METERS/SECOND DECREASING TO 2 TO
5 METERS/SECOND IN THE EVENING AND OVERNIGHT,
THEN SHIFTING TO THE EAST 1 TO 2 METERS/SECOND
AFTER 3 AM.
DISPERSION INDEX....85 DECREASING TO 4.
LVORI...............3.
STABILITY CLASS.....4.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........74 84 84 83 68 77
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).10 0 0 0 0 0
TEMP............76 68 64 62 59 58
RH..............34 51 65 70 78 77
20 FT WIND DIR..S S S S E ENE
20 FT WIND SPD..6 2 1 1 1 1
20 FT WIND GUST.13 8 5 3 3 5
MIX HGT (FT)....5400 400 400 300 300 300
MIX HGT (M).....1650 120 120 90 90 90
TRANSP WIND DIR.S S S S S ENE
TRANSP WIND SPD.14 8 7 6 5 5
TRANS WIND DIR..S S S S S ENE
TRANS SPD (M/S).6 4 3 3 2 2
DISPERSION IDX..85 4 3 3 2 2
LVORI...........1 3 3 3 4 4
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 7 MPH.
MIXING HEIGHT.......5300 FT AGL.
MIXING HEIGHT (M)...91-1615 METERS AGL.
TRANSPORT WINDS.....EAST 3 TO 8 MPH SHIFTING TO THE SOUTH 12 TO 15
MPH IN THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS M/S.EAST AROUND 3 METERS/SECOND SHIFTING TO THE
SOUTH 5 TO 7 METERS/SECOND IN THE LATE MORNING
AND AFTERNOON.
DISPERSION INDEX....5 INCREASING TO 64 LATE IN THE MORNING
INCREASING TO 70 EARLY IN THE AFTERNOON.
LVORI...............3.
STABILITY CLASS.....2.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........64 45 58 65 66 42
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 10 10 10 10
TEMP............57 60 73 78 80 80
RH..............80 75 51 45 42 44
20 FT WIND DIR..ENE ESE SE SSE SSE SE
20 FT WIND SPD..2 2 5 7 8 8
20 FT WIND GUST.6 7 12 16 17 16
MIX HGT (FT)....300 700 3900 5000 5300 4500
MIX HGT (M).....90 210 1190 1520 1620 1370
TRANSP WIND DIR.E ESE SSE SSE SSE SSE
TRANSP WIND SPD.6 8 14 14 13 12
TRANS WIND DIR..E ESE SSE SSE SSE SSE
TRANS SPD (M/S).3 4 6 6 6 5
DISPERSION IDX..2 7 64 63 71 61
LVORI...........4 4 1 1 1 1
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT). PATCHY FOG AFTER
3 AM.
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 58.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 6 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......100 FT AGL.
MIXING HEIGHT (M)...30-1372 METERS AGL.
TRANSPORT WINDS.....SOUTHEAST 6 TO 14 MPH.
TRANSPORT WINDS M/S.SOUTHEAST 3 TO 6 METERS/SECOND.
DISPERSION INDEX....70 DECREASING TO 5.
LVORI...............5.
STABILITY CLASS.....4.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........30 21 23 14 9 10
WEATHER COV..... PATCHY
WEATHER TYPE....NONE NONE NONE NONE NONE FOG
TSTM COV........
CHC OF PCPN (%).10 0 0 0 0 0
TEMP............78 70 66 64 62 60
RH..............45 63 84 90 93 96
20 FT WIND DIR..SSE SSE SSE SE SE ESE
20 FT WIND SPD..7 5 3 2 1 2
20 FT WIND GUST.16 13 10 8 6 7
MIX HGT (FT)....4500 400 400 300 300 300
MIX HGT (M).....1370 120 120 90 90 90
TRANSP WIND DIR.SSE S SSE SSE SSE SE
TRANSP WIND SPD.14 10 9 8 7 6
TRANS WIND DIR..SSE S SSE SSE SSE SE
TRANS SPD (M/S).6 4 4 4 3 3
DISPERSION IDX..70 5 4 4 3 3
LVORI...........1 3 5 6 8 9
THURSDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). PATCHY FOG EARLY IN THE
MORNING.
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........41 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 8 MPH WITH
GUSTS TO AROUND 20 MPH IN THE LATE MORNING AND
AFTERNOON.
MIXING HEIGHT.......6600 FT AGL.
MIXING HEIGHT (M)...30-2012 METERS AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 13 MPH.
TRANSPORT WINDS M/S.SOUTHEAST 2 TO 6 METERS/SECOND.
DISPERSION INDEX....5 INCREASING TO 85.
LVORI...............5.
STABILITY CLASS.....2.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........19 23 19 15 11 11 12 12 12 11 11 10
WEATHER COV.....PTY PTY PTY
WEATHER TYPE....FOG FOG FOG
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 10 10 10 10 10
TEMP............58 59 63 68 73 76 79 81 82 83 83 81
RH..............100 100 90 81 71 62 52 47 43 41 41 46
20 FT WIND DIR..ESE ESE ESE SE SE SE SSE SSE SSE SSE SSE SSE
20 FT WIND SPD..2 2 3 5 6 7 8 8 9 9 9 9
20 FT WIND GUST.7 8 10 12 14 15 17 18 18 20 18 18
MIX HGT (KFT)...0.1 0.3 1.2 2.4 3.5 4.5 5.3 5.9 6.4 6.6 6.1 6.1
MIX HGT (KM)....0.1 0.1 0.4 0.7 1.1 1.4 1.6 1.8 2.0 2.0 1.9 1.9
TRANSP WIND DIR.SE SE SE SE SE SSE SSE SSE SSE SSE SSE SSE
TRANSP WIND SPD.5 6 8 10 13 13 13 12 12 13 13 13
TRANS WIND DIR..SE SE SE SE SE SSE SSE SSE SSE SSE SSE SSE
TRANS SPD (M/S).2 3 4 4 6 6 6 5 5 6 6 6
DISPERSION IDX..3 6 14 34 57 66 74 75 81 86 83 84
LVORI...........9 9 5 3 1 1 1 1 1 1 1 1
FORECASTER...25
REQUESTED BY...JODY ROGERS
TYPE OF REQUEST...PRESCRIBED
.TAG 2611244.0/MOB
.DELDT 04/21/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSEPH.ROGERS@USDA.GOV
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